Payment overview · 2025
General Payments
$51.63
2 reported records · 1 companies
Healthcare provider profile · identity verified
David Da Zheng
Allopathic & Osteopathic Physicians|Internal Medicine · BEVERLY HILLS, CA · NPI 1710484647
Verified facts
What the public records show
CMS Open Payments records show David Da Zheng received $51.63 in general payments during 2025 across 2 reported records.
Sumitomo Pharma America, Inc. accounted for 100.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 1 associated product.
These records do not establish that a payment influenced prescribing or medical care.
Separate record types
Research & Ownership
Research Payments (direct recipient): not present in the loaded data
Associated Research Funding (for example, named PI): not present in the loaded data
Ownership / Investment: not present in the loaded data
These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.
Who paid this doctor?
Companies in 2025 General Payments
| Reported company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| Sumitomo Pharma America, Inc. | Unresolved — no canonical attribution shown | $51.63 | 100.0% | 2 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $51.63 | 2 |
A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.
Analysis 1 · Payment-linked products
Products named in Open Payments records
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| GEMTESA Normalized: gemtesa |
Drug | Sumitomo Pharma America, Inc. | $51.63 | 2 | 2025 |
Source payment records
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* Product-associated amounts are non-additive because one payment record may name more than one product.
These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.
Public prescribing for products named in payments
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.
Analysis 2 · Same-company prescribing overlap
Drugs reported in other payments from the same company that also appear in Medicare Part D
This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.
No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.
These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.
Public Medicare Part D data
Provider-and-drug rows loaded for 2024
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 655 | 218 |
| Amlodipine Besylate | Amlodipine Besylate | 416 | 137 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 287 | 97 |
| Losartan Potassium | Losartan Potassium | 275 | 83 |
| Levothyroxine Sodium | Levothyroxine Sodium | 258 | 66 |
| Lisinopril | Lisinopril | 208 | 67 |
| Metformin Hcl | Metformin Hcl | 206 | 66 |
| Tamsulosin Hcl | Tamsulosin Hcl | 149 | 46 |
| Metoprolol Succinate | Metoprolol Succinate | 131 | 39 |
| Hydrochlorothiazide | Hydrochlorothiazide | 128 | 45 |
| Omeprazole | Omeprazole | 125 | 51 |
| Pantoprazole Sodium | Pantoprazole Sodium | 113 | 34 |
| Gabapentin | Gabapentin | 111 | 45 |
| Zolpidem Tartrate | Zolpidem Tartrate | 109 | 32 |
| Famotidine | Famotidine | 107 | 36 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 106 | 44 |
| Sertraline Hcl | Sertraline Hcl | 96 | 17 |
| Carvedilol | Carvedilol | 86 | 28 |
| Alprazolam | Alprazolam | 84 | 21 |
| Ozempic | Semaglutide | 83 | 21 |
| Simvastatin | Simvastatin | 82 | 24 |
| Trazodone Hcl | Trazodone Hcl | 80 | 26 |
| Fluticasone Propionate | Fluticasone Propionate | 77 | 38 |
| Jardiance | Empagliflozin | 74 | 17 |
| Metformin Hcl Er | Metformin Hcl | 70 | 25 |
| Lorazepam | Lorazepam | 67 | 19 |
| Eliquis | Apixaban | 66 | 16 |
| Ezetimibe | Ezetimibe | 61 | 24 |
| Allopurinol | Allopurinol | 59 | 17 |
| Benazepril Hcl | Benazepril Hcl | 57 | 17 |
| Alendronate Sodium | Alendronate Sodium | 56 | 24 |
| Furosemide | Furosemide | 54 | 18 |
| Azelastine Hcl | Azelastine Hcl | 53 | 16 |
| Irbesartan | Irbesartan | 50 | 17 |
| Pravastatin Sodium | Pravastatin Sodium | 48 | 14 |
| Clopidogrel | Clopidogrel Bisulfate | 47 | 15 |
| Atenolol | Atenolol | 45 | 12 |
| Escitalopram Oxalate | Escitalopram Oxalate | 41 | 14 |
| Metoprolol Tartrate | Metoprolol Tartrate | 39 | 12 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 38 | 16 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 38 | 13 |
| Montelukast Sodium | Montelukast Sodium | 38 | 11 |
| Spironolactone | Spironolactone | 37 | suppressed |
| Chlorthalidone | Chlorthalidone | 36 | 13 |
| Clonazepam | Clonazepam | 34 | suppressed |
| Naproxen | Naproxen | 34 | 15 |
| Donepezil Hcl | Donepezil Hcl | 32 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 29 | 14 |
| Meloxicam | Meloxicam | 28 | suppressed |
| Memantine Hcl | Memantine Hcl | 28 | suppressed |
| Triazolam | Triazolam | 28 | suppressed |
| Trulicity | Dulaglutide | 28 | suppressed |
| Synthroid | Levothyroxine Sodium | 27 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 26 | 12 |
| Ketoconazole | Ketoconazole | 26 | 13 |
| Acyclovir | Acyclovir | 25 | suppressed |
| Duloxetine Hcl | Duloxetine Hcl | 24 | 12 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 24 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 24 | 12 |
| Finasteride | Finasteride | 23 | 12 |
| Pioglitazone Hcl | Pioglitazone Hcl | 23 | 11 |
| Ramipril | Ramipril | 23 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 22 | suppressed |
| Diazepam | Diazepam | 22 | suppressed |
| Xarelto | Rivaroxaban | 22 | suppressed |
| Mupirocin | Mupirocin | 21 | suppressed |
| Potassium Chloride | Potassium Chloride | 21 | 11 |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 20 | suppressed |
| Ibuprofen | Ibuprofen | 20 | suppressed |
| Mirtazapine | Mirtazapine | 20 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 20 | suppressed |
| Alfuzosin Hcl Er | Alfuzosin Hcl | 19 | suppressed |
| Pregabalin | Pregabalin | 19 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 18 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 18 | suppressed |
| Myrbetriq | Mirabegron | 18 | suppressed |
| Ondansetron Odt | Ondansetron | 18 | suppressed |
| Telmisartan | Telmisartan | 18 | suppressed |
| Tramadol Hcl-Acetaminophen | Tramadol Hcl/Acetaminophen | 18 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 17 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 17 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 17 | suppressed |
| Ranolazine Er | Ranolazine | 17 | suppressed |
| Aripiprazole | Aripiprazole | 16 | suppressed |
| Nifedipine Er | Nifedipine | 16 | suppressed |
| Sildenafil Citrate | Sildenafil Citrate | 16 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 15 | suppressed |
| Ciclopirox | Ciclopirox | 15 | suppressed |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 15 | suppressed |
| Fenofibrate | Fenofibrate Nanocrystallized | 14 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 14 | suppressed |
| Januvia | Sitagliptin Phosphate | 14 | suppressed |
| Topiramate | Topiramate | 14 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 14 | 11 |
| Celecoxib | Celecoxib | 13 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 13 | suppressed |
| Mounjaro | Tirzepatide | 13 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 13 | 13 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 13 | suppressed |
| Rybelsus | Semaglutide | 13 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 13 | suppressed |
| Bupropion Xl | Bupropion Hcl | 12 | suppressed |
| Doxazosin Mesylate | Doxazosin Mesylate | 12 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 12 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 12 | suppressed |
| Zolpidem Tartrate Er | Zolpidem Tartrate | 12 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 11 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 11 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 11 | suppressed |
| Entresto | Sacubitril/Valsartan | 11 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 11 | suppressed |
| Glipizide Er | Glipizide | 11 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 11 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 11 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 11 | suppressed |
Timeline
Payment and prescribing data by year
Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.
| Year | General Payments | Main payer | Explicit products | Company overlaps | Part D coverage |
|---|---|---|---|---|---|
| 2025 | $51.63 · 2 records | Sumitomo Pharma America, Inc. | GEMTESA | — | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- Are there reasonable alternatives I should understand when we discuss treatment options?
- How should I interpret the industry-payment records shown here in the context of my care?
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
How to read this page
- Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
- Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
- Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
- Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
- When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.
Loaded source releases
| Dataset | Year | Publication | Source |
|---|---|---|---|
| CMS Open Payments — General Payments | 2025 | 2026-06-30 | Original source |
| Medicare Part D Prescribers by Provider and Drug | 2024 | 2026-05-06 | Original source |
| NPPES Data Dissemination V2 | current / reference data | 2026-08-10 | Original source |
Full methodology · Questions & answers · Report a possible error